CN106838987A - After-burner bilayer rectification support plate - Google Patents
After-burner bilayer rectification support plate Download PDFInfo
- Publication number
- CN106838987A CN106838987A CN201710222402.XA CN201710222402A CN106838987A CN 106838987 A CN106838987 A CN 106838987A CN 201710222402 A CN201710222402 A CN 201710222402A CN 106838987 A CN106838987 A CN 106838987A
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- China
- Prior art keywords
- support plate
- burner
- rectification support
- rectification
- flow
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 10
- 230000003416 augmentation Effects 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 abstract description 8
- 238000011105 stabilization Methods 0.000 abstract description 8
- 238000001816 cooling Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 230000003019 stabilising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/16—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration with devices inside the flame tube or the combustion chamber to influence the air or gas flow
- F23R3/18—Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
The invention provides a kind of air intake structure of after-burner bilayer rectification support plate, air-flow can twice be slowed down, the region of low speed flow can be effectively improved in after-burner such that it is able to be ensured the carrying out of flame stabilization in after-burner.The present invention sets two-layer rectification support plate in afterbunring chamber inlet and reinforcing tail bone afterbody respectively, and air-flow is divided into inside and outside two parts in reinforcing tail bone afterbody setting inner sleeve, outer to contain for afterburning and cooling, intension air is used for main combustion, so as to realize that air-flow makes full use of.Meanwhile, the flaring entrance of inner sleeve can further decelerating flow, so as to ensure that the stabilization in intension primary zone is fully burnt.
Description
Technical field
The invention belongs to after-burner field, and in particular to front and rear two-layer integrated commutation branch in a kind of after-burner
Plate, reduces air velocity, increases the structure of flame combustion chamber stability range
Background technology
It is the important technical for improving aero-engine thrust-weight ratio using after-burner.However, after-burner work
Make that environment is poor, the fuel gas temperature excluded from turbine outlet is high, pressure is low, speed is high, is unfavorable for combustion gas at after-burner midpoint
Fire burning.Light a fire and organize the still traditional after-burner fueling injection equipment of burning and flameholder direct in after-burner
It is positioned in the main gas flow path of after-burner, inevitably produces blocking to blocking primary air, causes obvious stagnation pressure
Loss, flow resistance loss is larger under " cold conditions " when not opening reinforcing especially, causes its oil consumption rate higher, it is impossible to long-term use.
4th generation fighter plane proposes requirements at the higher level to the performance of aircraft engine so that the working environment of after-burner
There occurs that great variety is mainly characterized by intension inlet air flow extreme temperatures (up to more than 1200K), reinforcing extreme temperatures are (average
Reinforcing temperature is up to 2100~2150K, and core flow reinforces temperature up to 2300K), it is desirable to lower fluid loss, combustion higher
Burn efficiency and lighter weight.Therefore the new reinforcing stabilizer of a generation occurs in succession.By after-burner flameholder and whirlpool
Rectification support plate and the reinforcing inner cone with gaseous film control carry out integrated design after wheel, can cancel conventional force flame combustion chamber stabilization
Device, greatly reduces the flow resistance loss under non-reinforcing " cold conditions ", shortens after-burner length, reduces additional mass, and raising is started
The thrust-weight ratio of machine.
When airflow passes integrated commutation support plate, low-pressure area is produced in the cavity of rectification support plate afterbody, form local
Recirculating zone, so as to stablize flame combustion.Because the size of rectification support plate is limited, thus rectification support plate afterbody cavity provide return
Stream area's size is limited.The after-burner bilayer rectification support plate structure that will be designed of this secondary design, can be in after-burner head
With the stabilization that middle part carries out air-flow twice, by increasing capacitance it is possible to increase after-burner recirculating zone volume, so as to effectively improve steady air current effect
Really, after-burner burner inner liner stability range is improved, it is ensured that after-burner efficiency of combustion.
The content of the invention
The technical problem to be solved in the present invention is a kind of double-deck rectification support plate structure in after-burner.With prior art phase
Than after-burner head is mainly divided into front and rear two parts by the invention, is respectively provided with rectification support plate such that it is able to increase air-flow
Range of circulating flow, improves flame stabilization combustion space.After-burner rear portion sets provided with internal duct and external duct, and rectification branch is set in intension
Plate, main duct entrance uses expansion structure to reduce air velocity, coordinates rectification support plate effectively to reduce air velocity.
Technical scheme
It is an object of the invention to provide a kind of head construction of after-burner bilayer rectification support plate.
The object of the present invention is achieved like this：
After-burner entry position is entered using double-deck rectification support plate, wherein ground floor rectification support plate positioned at after-burner
Mouth position, support plate quantity is 12, and ground floor rectification support plate is vertical with airflow direction and after-burner wall.Fired in reinforcing
Room tail bone afterbody is burnt, increases inner sleeve, after-burner is divided into provided with internal duct and external duct, wherein, inner sleeve wall face height is reinforcing
2/3~4/3 (ensureing that the air that intension enters is more) of combustion chamber height, inner sleeve entrance sets certain angle, angle
Scope is 10~25 °, and angle should be less than reinforcing tail bone wall angle, so as to ensure that after-burner intension entrance is expansion shape.
Main duct sets second layer rectification support plate after entrance, and rectification support plate quantity is 12 or 6, and second layer rectification support plate is vertical
It is vertical with reinforcing inner cone wall.
Rectification support plate blade profile uses streamlined design, the similar bullet bullet of global shape.Wherein one or two layers rectification support plate
Shape is essentially identical, and size is as follows：Ground floor rectification branch plate thickness is 40~44mm, and wherein blade profile is symmetrical curve, wherein one
Lateral curvature line is that radius is the minor arc part of the circular arc of 2000mm.Rectification support plate nose curve is circular arc that radius is 1.5~2mm
Minor arc part, rectification support plate afterbody is minor arc part that radius is 30~32mm circular arcs.Second layer rectification branch plate thickness be 30~
32mm, blade profile is symmetrical curve, and side curve is that radius is the minor arc part of the circular arc of 1000mm, and rectification support plate afterbody is radius
It is the minor arc part of 22~23mm circular arcs.Rectification support plate nose curve is the minor arc part of circular arc that radius is 1.5~2mm.
Following beneficial effect can use to obtain using the present invention：
1. the present invention can carry out air-flow adjustment twice using the after-burner head construction of double-deck rectification support plate, from
And low speed flow region in afterbunring room can be improved, so as to increase after-burner stable operation range.
2. air-flow is divided into two parts by the ring baffle in reinforcing tail bone afterbody, and wherein outer gas stream is conducive to afterbunring
Room wall cooling, internal gas flow continues to slow down in the presence of second layer rectification support plate, forms bigger low speed recirculation zone, from
And burning can be made more to stablize.
Brief description of the drawings
Fig. 1：Double-deck rectification support plate after-burner sectional view；
Fig. 2：Double-deck rectification support plate after-burner rearview；
Fig. 3：The vertical figure of double-deck rectification support plate after-burner；
Fig. 4：Rectification support plate blade profile schematic diagram.
In Fig. 1：1- ground floor rectification support plates, 2- reinforcing tail bones, 3- second layer rectification support plates, 4- inner sleeves, 5- reinforcing combustions
Burn room casing
Specific embodiment
In conjunction with accompanying drawing, the invention will be further described：
With reference to Fig. 1, Fig. 2 and Fig. 3, the invention provides one kind in after-burner, after-burner can be effectively reduced
Inlet air flow speed, improves the double-deck rectification support plate structure of flame stabilization combustion range.Fig. 1 is after-burner sectional view, Fig. 2
It is after-burner rearview, Fig. 3 is after-burner stereogram, and Fig. 4 is rectification support plate blade profile schematic diagram.
In after-burner, inlet air flow speed is fast, and pressure is low, and the air-flow of high speed will be caused to light a fire and maintain flame steady
Fixed burning is very difficult, it is therefore desirable to carry out installing the steady flame device for reducing air velocity additional, to ensure flame in after-burner
In normal ignition burning.Typically install V-shaped groove flameholder additional in a combustion chamber, but due to aerodynamic drag is excessive,
Now rectification support plate is combined with V-shaped groove flameholder, the novel flame stabilizer of rectification support plate integration is formd.Rectification
Support plate integral flame stabilising arrangement is typically installed at after-burner entry position, can effectively reduce air-flow in afterbunring
The resistance flowed in room, while certain flame stabilization effect can be played.But due to integrated commutation support plate afterbody V-arrangement fire
Flame stabilising arrangement diminishes, therefore accordingly reduces in the low-speed region that rectification support plate afterbody is produced, therefore relative to larger V-shaped groove fire
Flame stabilizer, the steady flame effect of integrated commutation support plate has declined.
The present invention after air-flow is entered into after-burner, (is schemed using the concept of air-flow layering by ground floor rectification support plate
In 1 1) after, by once slowing down, air-flow overall rate has declined air-flow, and air-flow is divided into by inner sleeve (4 in Fig. 1) afterwards
Inside and outside two strands, main duct air inlet section uses flaring entrance such that it is able to further slow down air velocity, reaches the mesh of stabilization burning
's.Meanwhile, install second layer rectification support plate additional in main duct entrance such that it is able to farthest reduce air-flow velocity.Meanwhile,
The pressure loss can effectively be reduced using integrated commutation support plate.
Claims (4)
1. after-burner bilayer rectification support plate structure, it is characterised in that：After-burner entry position sets ground floor rectification
Support plate, after-burner tail bone tail position sets second layer rectification support plate.Wherein ground floor rectification support plate is highly for reinforcing is fired
The 1/3~1/2 of chamber inlet total height is burnt, second layer rectification support plate height is determined according to family combustion chamber inner sleeve.
2. a kind of after-burner bilayer rectification support plate structure according to claim 1, in afterburner thrust augmentation tail bone
Afterbody installs inner sleeve additional, and sleeve is highly 2/3~4/3 (ensureing that the air that intension enters is more) of after-burner height.
Inner sleeve entrance sets certain angle, is 15~25 °, and angle should be less than reinforcing tail bone wall angle, so as to ensure that intension is entered
Mouth is flaring entrance.
3. a kind of after-burner bilayer rectification support plate structure according to claim 1 and 2, one layer of rectification support plate quantity is
12, two layers of rectification support plate are 12 or 6, and wherein ground floor rectification support plate is vertical with after-burner casing wall, second
Layer rectification support plate is vertical with reinforcing tail bone wall.
4. a kind of double-deck rectification support plate structure of after-burner according to claim 1,2 or 3, it is characterised in that：It is double-deck
Rectification support plate blade profile uses airflow design, and its global shape is similar to bullet.Wherein one or two layers rectification branch plate shape are essentially identical,
Size is as follows：Ground floor rectification branch plate thickness is 40~44mm, and wherein blade profile is symmetrical curve, and wherein side curve is for radius
The minor arc part of the circular arc of 2000mm.Rectification support plate nose curve is the minor arc part of circular arc that radius is 1.5~2mm, rectification
Support plate afterbody is minor arc part that radius is 30~32mm circular arcs.Second layer rectification branch plate thickness is 30~32mm, and blade profile is right
Claim curve, side curve is that radius is the minor arc part of the circular arc of 1000mm, and rectification support plate afterbody is radius for 22~23mm justifies
The minor arc part of arc.Rectification support plate nose curve is the minor arc part of circular arc that radius is 1.5~2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222402.XA CN106838987B (en) | 2017-04-07 | 2017-04-07 | After-burner bilayer rectifies supporting plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222402.XA CN106838987B (en) | 2017-04-07 | 2017-04-07 | After-burner bilayer rectifies supporting plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106838987A true CN106838987A (en) | 2017-06-13 |
| CN106838987B CN106838987B (en) | 2019-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710222402.XA Expired - Fee Related CN106838987B (en) | 2017-04-07 | 2017-04-07 | After-burner bilayer rectifies supporting plate |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224473A (en) * | 2017-12-28 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | A kind of integrated after-burner of sudden expansion inner cone flame stabilization structure |
| CN110925795A (en) * | 2019-11-06 | 2020-03-27 | 西北工业大学 | Afterburning chamber of doublestage burning |
| CN112113241A (en) * | 2020-09-18 | 2020-12-22 | 中国航发四川燃气涡轮研究院 | Rectifying grid of stamping combustion chamber |
| CN113357045A (en) * | 2021-05-23 | 2021-09-07 | 中国航发沈阳发动机研究所 | High stealthy turbofan engine |
| CN113357670A (en) * | 2021-05-23 | 2021-09-07 | 中国航发沈阳发动机研究所 | Air cooling and shielding integrated afterburner |
| CN115183271A (en) * | 2022-07-21 | 2022-10-14 | 中国航发沈阳发动机研究所 | Thermal jet ignition afterburner |
| CN115200038A (en) * | 2022-07-21 | 2022-10-18 | 中国航发沈阳发动机研究所 | Afterburner adopting air-cooled serial support plate for rectification |
| CN115218211A (en) * | 2022-07-21 | 2022-10-21 | 中国航发沈阳发动机研究所 | Aeroengine for supporting plate rectification |
| CN115371080A (en) * | 2022-07-05 | 2022-11-22 | 中国航发四川燃气涡轮研究院 | Enhanced tissue combustion chamber |
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| CN101776283A (en) * | 2009-01-13 | 2010-07-14 | 北京航空航天大学 | Flame stabilizer with jet injection |
| CN102538010A (en) * | 2012-02-12 | 2012-07-04 | 北京航空航天大学 | Afterburner integrated with stabilizer and worm wheel rear rectification support plate |
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| CN105674332A (en) * | 2016-01-19 | 2016-06-15 | 西北工业大学 | Pre-evaporation type integrated afterburner |
| RU165003U1 (en) * | 2015-12-25 | 2016-09-27 | Открытое акционерное общество "Научно-производственное объединение "Сатурн" | DEVICE FOR STABILIZING A FLAME IN AN AFTER CHAMBER OF A TURBO-REACTIVE ENGINE |
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2017
- 2017-04-07 CN CN201710222402.XA patent/CN106838987B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101776283A (en) * | 2009-01-13 | 2010-07-14 | 北京航空航天大学 | Flame stabilizer with jet injection |
| JP2012132630A (en) * | 2010-12-22 | 2012-07-12 | Ihi Corp | Afterburner and aircraft engine |
| CN102538010A (en) * | 2012-02-12 | 2012-07-04 | 北京航空航天大学 | Afterburner integrated with stabilizer and worm wheel rear rectification support plate |
| US20150121886A1 (en) * | 2013-03-08 | 2015-05-07 | Rolls-Royce North American Technologies, Inc. | Gas turbine engine afterburner |
| RU165003U1 (en) * | 2015-12-25 | 2016-09-27 | Открытое акционерное общество "Научно-производственное объединение "Сатурн" | DEVICE FOR STABILIZING A FLAME IN AN AFTER CHAMBER OF A TURBO-REACTIVE ENGINE |
| CN105674332A (en) * | 2016-01-19 | 2016-06-15 | 西北工业大学 | Pre-evaporation type integrated afterburner |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224473A (en) * | 2017-12-28 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | A kind of integrated after-burner of sudden expansion inner cone flame stabilization structure |
| CN110925795A (en) * | 2019-11-06 | 2020-03-27 | 西北工业大学 | Afterburning chamber of doublestage burning |
| CN112113241A (en) * | 2020-09-18 | 2020-12-22 | 中国航发四川燃气涡轮研究院 | Rectifying grid of stamping combustion chamber |
| CN113357045A (en) * | 2021-05-23 | 2021-09-07 | 中国航发沈阳发动机研究所 | High stealthy turbofan engine |
| CN113357670A (en) * | 2021-05-23 | 2021-09-07 | 中国航发沈阳发动机研究所 | Air cooling and shielding integrated afterburner |
| CN115371080A (en) * | 2022-07-05 | 2022-11-22 | 中国航发四川燃气涡轮研究院 | Enhanced tissue combustion chamber |
| CN115371080B (en) * | 2022-07-05 | 2023-09-05 | 中国航发四川燃气涡轮研究院 | Reinforced tissue combustion chamber |
| CN115200038A (en) * | 2022-07-21 | 2022-10-18 | 中国航发沈阳发动机研究所 | Afterburner adopting air-cooled serial support plate for rectification |
| CN115218211A (en) * | 2022-07-21 | 2022-10-21 | 中国航发沈阳发动机研究所 | Aeroengine for supporting plate rectification |
| CN115183271B (en) * | 2022-07-21 | 2023-08-22 | 中国航发沈阳发动机研究所 | Thermal jet ignition afterburner |
| CN115200038B (en) * | 2022-07-21 | 2023-08-22 | 中国航发沈阳发动机研究所 | Afterburner adopting air-cooled serial support plates for rectification |
| CN115218211B (en) * | 2022-07-21 | 2023-08-22 | 中国航发沈阳发动机研究所 | Aeroengine for supporting plate rectification |
| CN115183271A (en) * | 2022-07-21 | 2022-10-14 | 中国航发沈阳发动机研究所 | Thermal jet ignition afterburner |
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| Publication number | Publication date |
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| CN106838987B (en) | 2019-07-05 |
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Granted publication date: 20190705 |